Aerospace giant Boeing is facing a new challenge in the form of a potential strike by 32,000 workers that could begin this month if the company and union are unable to reach an agreement. Boeing's contract with the International Association of Machinists (IAM) is set to expire on Sept. 12, and the union's members, who build planes at Boeing facilities in the state of Washington, have threatened to go on strike if their demands aren't met.In mid-July, the union's members approved a strike authorization vote ...